The (Triphenylphosphoranylidene)ethenone, with the CAS registry number 73818-55-0, is also known as Ethenone, 2-(triphenylphosphoranylidene)-. This chemical's molecular formula is C₂₀H₁₅OP and molecular weight is 302.31. What's more, its systematic name is (Triphenylphosphoranylidene)ethenone.

Physical properties of (Triphenylphosphoranylidene)ethenone are: (1)ACD/LogP: 3.68; (2)# of Rule of 5 Violations: 0; (3)#H bond acceptors: 1; (4)#H bond donors: 0; (5)#Freely Rotating Bonds: 3; (6)Polar Surface Area: 26.88 Å²; (7)Index of Refraction: 1.604; (8)Molar Refractivity: 92.28 cm³; (9)Molar Volume: 268 cm³; (10)Polarizability: 36.58×10^-24cm³; (11)Surface Tension: 29.5 dyne/cm; (12)Density: 1.12 g/cm³; (13)Flash Point: 229.2 °C; (14)Enthalpy of Vaporization: 71.51 kJ/mol; (15)Boiling Point: 455.4 °C at 760 mmHg; (16)Vapour Pressure: 1.77E-08 mmHg at 25°C.

Uses of (Triphenylphosphoranylidene)ethenone: it can be used to produce 1-phenyl-pyrrolizin-3-one by heating. It will need solvent benzene with the reaction time of 12 hours. The yield is about 86%.

You can still convert the following datas into molecular structure:
(1)SMILES: O=C=C=P(c1ccccc1)(c2ccccc2)c3ccccc3
(2)Std. InChI: InChI=1S/C20H15OP/c21-16-17-22(18-10-4-1-5-11-18,19-12-6-2-7-13-19)20-14-8-3-9-15-20/h1-15H
(3)Std. InChIKey: MNASRBWCHRURHY-UHFFFAOYSA-N